planchet

noun
plan·​chet | \ ˈplan-chət How to pronounce planchet (audio) \

Definition of planchet

1 : a metal disk to be stamped as a coin
2 : a small metal or plastic disk

First Known Use of planchet

1611, in the meaning defined at sense 1

History and Etymology for planchet

diminutive of planch flat plate, from Middle French planche

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The first known use of planchet was in 1611

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planchet

noun
plan·​chet | \ ˈplan-chət How to pronounce planchet (audio) \

Medical Definition of planchet

: a small metal disk or plate on which a sample of radioactive material is placed (as for quantitative determination of its activity)

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